Method and apparatus for quickly restoring digit I/O lines

Details Method and apparatus for quickly restoring digit I/O lines Method and apparatus for quickly restoring digit I/O lines

1996-01-17

1997-10-14

Nelms, David C.

Static information storage and retrieval

Read/write circuit

Including level shift or pull-up circuit

365205, G11C 700

Patent

active

056778783

ABSTRACT:
A helper flip-flop device is coupled to a pair of I/O DIGIT lines in a DC bias current sensing based dynamic random access memory (DRAM) device for ensuring that one of the DIGIT lines returns to as low a voltage as possible following a memory access. A sense amplifier is coupled to the I/O lines to amplify the differential voltage appearing on the lines following access of a memory cell. The helper flip-flop, when activated at the same time the DC bias is removed, sinks current from the low line to ground, effectively reducing its voltage to near ground to allow faster release of the row access signal.

REFERENCES:
patent: 5280452 (1994-01-01), Dhong et al.
patent: 5285408 (1994-02-01), Starkweather et al.
patent: 5386389 (1995-01-01), Taoka

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